A 52-year-old woman presents with progressive unilateral hearing loss and tinnitus over 18 months. Pure tone audiometry shows asymmetric high-frequency sensorineural hearing loss with disproportionately poor speech discrimination. Gadolinium-enhanced MRI reveals the structure marked **A** in the diagram—a mass in the cerebellopontine angle with extension into the internal auditory canal, creating an "ice-cream cone" appearance. Which of the following best describes the origin and pathological nature of this lesion?
Ready to test yourself?
Test your Radiology knowledge with AI-powered MCQs and detailed explanations — no signup required to try.
Sign up free and practice all 1 Vestibular Schwannoma MCQs with AI-powered explanations tailored to your performance.
Create Free Account